Florian Freistetter is an award-winning freelance science journalist and the author of six popular-science books on astronomy, including Isaac Newton- The Asshole Who Reinvented the Universe. He has also published more than five thousand articles on his blog, "Astrodicticum Simplex," one of the most-read German-language science blogs, and he writes a weekly column about mathematics for spektrum.de, as well as many other articles for various publications. Since 2015, he has produced and performed in humorous popular-science presentations in theaters in Austria, Germany, and Switzerland and also on television ("Science Busters") and he publishes a weekly podcast on astronomy. He has previously taught astronomy at the University of Heidelberg, Jena, and Vienna.